Pool



FIG. 1 is a front, left and, top perspective view of a pool, showing my new design;

FIG. 2 is a rear, right and, bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. S is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a front elevational view thereof. 

CLAIM The ornamental design for a pool, as shown and described. 